High power metal plate shunt resistors <Ultra low ohmic>
PSR series
Datasheet
●Features
1)High power max 15W
2)Ultra low resistance range(0.1mΩ or more).
3)Excellent TCR characteristic
4)Convex structure
●Products list
Part No.
Size
Resistance
(mΩ)
Tolerance
Special
code
Rated power
(Terminal temperature Tk)
Temperature
coefficient
＊
(ppm / ℃)
Operating
temperature
range
(℃)
Automotive
grade
available
(mm) (inch)
Low temperature
rating P
High temperature
rating P
PSR100 6432 2512
0.3
F ( ±1% )
D 8W (75℃) 4W (140℃) 0 ～ +150
-65 ～ +175 Yes
0.5 F 8W (75℃) 4W (140℃)
0 ～ +100
1.0 H 8W (75℃) 4W (140℃)
2.0 J 6W (75℃) 4W (140℃)
0 ～ +50
3.0 L 4W (75℃) 3W (140℃)
PSR400 10×5.2 3921
0.2
F ( ±1% )
C 12W (75℃) 5W (130℃) 125 ±50
-65 ～ +175 Yes
0.3 D 10W (75℃) 5W (130℃)
0 ～ +100
0.5 F 10W (75℃) 5W (130℃)
1.0 H 8W (75℃) 5W (130℃)
0 ～ +752.0 J 6W (75℃) 4W (115℃)
3.0 L 5W (70℃) 3W (115℃)
PSR500 15×7.75 5931
0.1
F ( ±1% )
B 15W (75℃) 10W (120℃) 200 ±50
-65 ～ +175 Yes
0.2 C 15W (75℃) 10W (120℃) 0 ～ +150
0.3 D 10W (75℃) 7W (120℃)
0 ～ +1500.4 E 10W (75℃) 7W (120℃)
0.5 F 10W (75℃) 7W (120℃)
1.0 H 10W (75℃) 6W (120℃)
0 ～ +75
2.0 J 7W (70℃) 4W (115℃)
＊
(+20℃ to +175℃)
●●Chip resistor dimensions and materials
(Unit : mm)
Part No. Resistance L W t H b Material
PSR100
0.3 mΩ
6.35 ±0.15 3.05 ±0.25
1.45 ±0.15
0.35 ±0.15 1.12 ±0.3
Cu/Mn0.5 mΩ 1.15 ±0.15
1.0 mΩ 0.75 ±0.15
2.0 mΩ 1.00 ±0.15
Ni/Cr
3.0 mΩ 0.75 ±0.15
PSR400
0.2 mΩ
10.0 ±0.3 5.2 ±0.3
1.90 ±0.15
0.5 ±0.15 2.0 ±0.6
Cu/Mn
0.3 mΩ 1.85 ±0.15
0.5 mΩ 1.30 ±0.15
1.0 mΩ 0.90 ±0.15
2.0 mΩ 1.10 ±0.15
Ni/Cr
3.0 mΩ 0.90 ±0.15
PSR500
0.1 mΩ
15.0 ±0.3 7.75 ±0.3
1.96 ±0.15
0.5 ±0.15
4.6 ±0.6
Cu/Mn
0.2 mΩ 1.85 ±0.15
4.0 ±0.6
0.3 mΩ 1.40 ±0.15
0.4 mΩ 1.15 ±0.15
0.5 mΩ 1.05 ±0.15
1.0 mΩ 1.35 ±0.15
Ni/Cr
2.0 mΩ 0.90 ±0.15
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1/7
2020.12 - Rev.I
PSR series
Datasheet
●●Derating Curve
■■PSR100
Items Conditions Specifications
Rated power
0.3mΩ
When the terminal temperature exceeds 75℃ and 140℃, the load shall be derated in accordance with Fig.1
P75℃=8W
at -65 ～ 75℃
(Terminal temperature)
Fig.1
P140℃=4W
at -65 ～ 140℃
(Terminal temperature)
Rated power
0.5mΩ
When the terminal temperature exceeds 75℃ and 140℃, the load shall be derated in accordance with Fig.2
P75℃=8W
at -65 ～ 75℃
(Terminal temperature)
Fig.2
P140℃=4W
at -65 ～ 140℃
(Terminal temperature)
Rated power
1.0mΩ
When the terminal temperature exceeds 75℃ and 140℃, the load shall be derated in accordance with Fig.3
P75℃=8W
at -65 ～ 75℃
(Terminal temperature)
Fig.3
P140℃=4W
at -65 ～ 140℃
(Terminal temperature)
Rated power
2.0mΩ
When the terminal temperature exceeds 75℃ and 140℃, the load shall be derated in accordance with Fig.4
P75℃=6W
at -65 ～ 75℃
(Terminal temperature)
Fig.4
P140℃=4W
at -65 ～ 140℃
(Terminal temperature)
Rated power
3.0mΩ
When the terminal temperature exceeds 75℃ and 140℃, the load shall be derated in accordance with Fig.5
P75℃=4W
at -65 ～ 75℃
(Terminal temperature)
Fig.5
P140℃=3W
at -65 ～ 140℃
(Terminal temperature)
Rated voltage
Rated current
Rated voltage and current are determined by the following formula.
Ｅ ：
Rated voltage
（Ｖ）
I
：
Rated current （A）
Ｐ ：
Rated power
（Ｗ）
Ｒ ：
Resistance （Ω）
Resistance
See P1
Temperature
-65℃ ～ +175℃
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© 2020 ROHM Co., Ltd. All rights reserved.
2/7
2020.12 - Rev.I